<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        const obj = {
            uname : 'zs',
            age : '66',
            parents : {
                father : {
                    uname : 'ls',
                    age : '79'
                },
                mothor : {
                    uname : 'tt',
                    age : '78'
                }
            }
        }

        const {parents:{father:{age :fage},mothor:{age : mage}}}= obj
        console.log(fage)
        console.log(mage)
    </script>
</body>
</html>